0% 0 Chemical Engineering Basics Quiz 8 1 / 50 Out of the following, the _________ pipe has the least corrosion resistance? Mild steel Wrought iron Cast iron Copper 2 / 50 Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank) ? H/4 H H/6 H/2 3 / 50 Out of the following, the most malleable material is_________? Wrought iron Copper Lead Aluminium 4 / 50 Out of the following, the joint produced by _______ has the lowest strength? Welding Brazing Soldering Riveting 5 / 50 Nitriding of a steel part does not increase its___________? Grain size Surface hardness Fatigue limit Wear resistance 6 / 50 Out of the following the refractive index is the highest for______? Brine Diamond Kerosene Glass 7 / 50 Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the _______ temperature of air? Saturation Dew point Wet bulb Dry bulb 8 / 50 Minimum number of members required to form a Public Limited Joint Stock Com-pany is_____? 7 17 10 12 9 / 50 More than 95% of ________ is present in corundum ? Al2O3 CaSiO2 MgO SiO2 10 / 50 Pearlite comprises of___________? 87% cementite & 13% Fe 87% ferrite & 13% cementite 87% ferrite & 13% C 93.33% ferrite & 6.67% C 11 / 50 Mild steel has ________ crystal lattice structure? Body centred cubic (bcc) Cubic Orthorhombic Face centred cubic (fcc) 12 / 50 Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as________? Re0.8, Re0.5 Re0.5, Re0.8 Re-0.8, Re0.5 Re0.8, Re-0.5 13 / 50 Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when__________? Not affected by any of the above parameters Prior cold deformation is increased Grain size is increased Strain rate is increased 14 / 50 Nusselt number/Biot number varies_____? Directly with thermal conductivity Directly with heat transfer co-efficient Inversely with thermal conductivity Inversely with the dimension of the solid 15 / 50 Moist climate is the most favourable factor in the site selection far a__________? Petroleum refinery Steel plant Coke oven battery Textile factory 16 / 50 One ton of refrigeration is not equivalent to the heat removal rate of ______? 50 kJ/sec 50 kcal/minute 3.5 KW 200 BTU/minute 17 / 50 Out of the following ________ iron has the best capability to bear sudden & excessive shocks? Pig White Cast Wrought 18 / 50 Otto cycle used in spark ignition petrol engines is also known as the constant _________ cycle? Pressure Heat None of these Volume 19 / 50 Non-ferrous alloys used for making cutting tools need not have high___________? Abrasion resistance Red hardness Cutting speed Toughness 20 / 50 Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of_________? Glass wood Copper Fireclay bricks Steel 21 / 50 Particle nature of cathode rays is proved due to the fact that they _________? Produce fluorescence Travel in a straight line Get deflected by magnetic electric field Heat the exposed material 22 / 50 Oxide layer formed on the non-ferrous metal surface after its annealing is___________? Removed with coarse emery cloth Hammered into the surface Removed by acid pickling Left as such to protect the surface 23 / 50 Oxyacetylene reducing flame is used while carrying out welding on_____? Grey cast iron Alloy steel High carbon steel Mild steel 24 / 50 Optical activity is a/an _________ property ? Both A. & B. Additive Constitutive Neither A. nor B. 25 / 50 Natural water contains approximately _______ percent of heavy water? 1.2 3.5 0.015 0.71 26 / 50 Out of the following, which will fracture most readity, when hit with a hard hammer ? Cast iron German silver Bronze Brass 27 / 50 Nickel is a __________ material? Ferroelectric Paramagnetic Semi-conductor Ferromagnetic 28 / 50 Out of the following, the lowest packing of atoms exists in ______ crystal lattice structure? Simple cubic Hexagonal close, packed (hcp) Face centred cubic (fcc) Body centred cubic (bcc) 29 / 50 One face of a furnace wall is at 1030?C and the other face is exposed to room temperature (30?C). If the thermal conductivity of furnace wall is 3 W. m-1. k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is______? 900 100 10000 9000 30 / 50 Milk is fat dispersed in water. It is an example of___________? Solution Emulsion Gel Suspension 31 / 50 Notched bar test is used for testing the __________ of a material? Machinability Endurance limit Impact strength Corrosion resistance 32 / 50 On being hit with a hammer, _____ will readily fracture? Mild steel Lead Cast iron Brass 33 / 50 Most important property of steels for use in automobile bodies is the_____? Formability Yield strength Resilience Toughness 34 / 50 Multistage compression of air as compared to single stage compression offers the advantage of_______? All A , B. & C. Increased volumetric efficiency Moisture elimination in the inter-stage cooler Power saving per unit weight of air delivered 35 / 50 Name the safety device used to protect the boiler, when the water level falls below a minimum level ? Safety valve Fusible plug Blow off cock Blow down valve 36 / 50 Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as__________? Gr, Gr0.25 Gr0.25, Gr0.33 Gr0.25, Gr Gr0.33, Gr0.25 37 / 50 Moist air is cooled along the line of constant _________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs ? Relative humidity Dew point temperature Wet bulb temperature Enthalpy 38 / 50 Oxygen cylinders used for autogenous (cutting/welding) purposes are _____? Made by sand casting Welded steel cylinders Seamless & made of steel Heat treated before use 39 / 50 On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the _______ of the input signal? Amplitude Damping Frequency None of these 40 / 50 Most of the phosphorous present in the blast furnace burden enters into_____? Refractory lining Hot metal Flue gases Slag 41 / 50 Normalising of an object does not__________? Improve ductility Improve mechanical properties Improve yield strength Refine coarse grain structure obtained during hot working 42 / 50 One of the methods of purification of leach liquor is ion exchange, which involves__________? Exchange between a gaseous phase and a liquid phase Exchange between a solid phase and a gas phase Exchange between a liquid phase and an organic resin phase Exchange between two liquid phases 43 / 50 Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type_________? Counter flow with unequal heat capacities Counter flow with equal heat capacities Parallel flow with equal heat capacities Parallel flow with unequal heat capacities 44 / 50 Out of the following substances, one ton of _______ will store the maximum heat for a rise of 30?C in temperature ? Steel Lignite Water Lime stone 45 / 50 Often earing defects are found during deep drawing operation, because the ___________? Sheet material has been given substantial spring back Starting sheet has planer anisotropy due to its texture Starting sheet has normal anisotropy due to its texture Surface finish of the sheet is poor 46 / 50 On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is___________? Tensile strength Creep Fatigue Toughness 47 / 50 Oxyacetylene reducing flame is used while carrying out welding on___________? High carbon steel Grey cast iron Alloy steel Mild steel 48 / 50 Normalising of a casting does not___________? Improve its mechanical properties Reduce segregation Induce stresses in it Refine its grain structure 49 / 50 Nuclear fission of one atom of uranium-235 produces the energy equivalent to about _____ MeV? 2000 200 500 20 50 / 50 Nickel and _______ are the alloying element added in steel to increase its toughness? Molybdenum Chromium Silicon Vanadium Provide Your Information Your score is The average score is 0% LinkedIn Facebook Twitter 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevChemical Engineering Basics Quiz 7 Chemical Engineering Basics Quiz 9Next
